saeed31641
سه شنبه 08 مهر 1393, 13:02 عصر
برای پسورد که توابع هش زیاد هستند پسورد میفرستی به هش تبدیل میکنه مثلاmdf
var getConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
var decryptConnection = DecryptConnection(getConnectionString);
using (SqlConnection connection = new SqlConnection(decryptConnection))
{
// To some thing here
}
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NameSpaces :
------------------
using System.Security.Cryptography;
using System.Configuration;
using System.Data.SqlClient;
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Initialization :
------------------
const string passphrase = "connection";
---------------
Encryption :
---------------
private static string EncryptConnection(string connectionString)
{
byte[] results;
var uTF8Encoding = new UTF8Encoding();
var HashProvider = new MD5CryptoServiceProvider();
byte[] TDESKey = HashProvider.ComputeHash(uTF8Encoding.GetBytes(pas sphrase));
var tDESAlgorithm = new TripleDESCryptoServiceProvider();
tDESAlgorithm.Key = TDESKey;
tDESAlgorithm.Mode = CipherMode.ECB;
tDESAlgorithm.Padding = PaddingMode.PKCS7;
byte[] dataToEncrypt = uTF8Encoding.GetBytes(connectionString);
try
{
ICryptoTransform Encryptor = tDESAlgorithm.CreateEncryptor();
results = Encryptor.TransformFinalBlock(dataToEncrypt, 0, dataToEncrypt.Length);
}
finally
{
tDESAlgorithm.Clear();
HashProvider.Clear();
}
return Convert.ToBase64String(results);
}
---------------
Decryption :
---------------
private static string DecryptConnection(string connectionString)
{
byte[] results;
var uTF8Encoding = new UTF8Encoding();
var hashProvider = new MD5CryptoServiceProvider();
byte[] tDESKey = hashProvider.ComputeHash(uTF8Encoding.GetBytes(pas sphrase));
var tDESAlgorithm = new TripleDESCryptoServiceProvider();
tDESAlgorithm.Key = tDESKey;
tDESAlgorithm.Mode = CipherMode.ECB;
tDESAlgorithm.Padding = PaddingMode.PKCS7;
byte[] dataToDecrypt = Convert.FromBase64String(connectionString);
try
{
ICryptoTransform Decryptor = tDESAlgorithm.CreateDecryptor();
results = Decryptor.TransformFinalBlock(dataToDecrypt, 0, dataToDecrypt.Length);
}
finally
{
tDESAlgorithm.Clear();
hashProvider.Clear();
}
return uTF8Encoding.GetString(results);
}
<connectionStrings>
<add name="ConnectionString"
connectionString="7Os+mKN5qLvQWu9FfIhHr***WoPvz875oi+s9o7nvI529cFnim 2U9AE9g9865ZF0L4Jaae+94dxM9enuRAskIWfW5kpWFUhfBAPY g1YQoV4ptgRH+qPiS+ByaA8CcxsSst0oCZWFN6ejg5+a2jhgHj 2c1QWlI1KhZckultjWsUw="
providerName ="System.Data.SqlClient" />
</connectionStrings>
فقط یه تیبل درست کن یه فیلد بزار که هر وقت اون فیلد ۱ بود تیدیل به هش کنه ۰ بود عادی باشه قبلا از هش کردن اون فیلد رو بخون بعد تصممی بگیر هش کنه